Philadelphia natives Alex Osadchy,66, and Grigory Klokishner, 74, died after their vessel was caught in a large swell in Manasquan Inlet near Point Pleasant Beach, the New Jersey State Police said.

The Coast Guard, state police and an NYPD helicopter responded to a report of an overturned boat at around 1:30 p.m., officials said.

Seven men were on the boat. Osadchy died at the scene, and Klokishner could not be saved after he was flown to Jersey Shore Hospital in Neptune, N.J, the state police said.

The Coast Guard, New Jersey State Police and an NYPD helicopter responded to a report of an overturned vessel in Manasquan Inlet, near Point Pleasant Beach. (NBC New York)

Four others are recovering at Ocean Medical Center, authorities said. One of the boaters refused medical attention, officials said.

At least one man was hoisted from the water into a helicopter, a Coast Guard spokesman said. Good Samaritans on nearby boats also helped by throwing flotation devices to the struggling victims, the spokesman said. The area is known for its strong currents, he said.